fix(speedDial): non-fab clicks no longer close immediately

In the demo application and some user's apps, the `md-open`
attribute was bound to an input element, but clicking this
element while the FAB Speed Dial was open would open and
then immediately close the speed dial since the user clicked
outside of the speed dial.

Fix by delaying the check for outside clicks until the next
digest loop.

Also fix a tiny positioning issue with the fling animation.

Fixes #5243. Closes #5440.

src/components/fabSpeedDial/demoBasicUsage/index.html

@@ -43,10 +43,9 @@
       <div layout="column" layout-align="start center">
         <b>Open/Closed</b>
 
-        <md-radio-group ng-model="demo.isOpen">
-          <md-radio-button ng-value="true">Open</md-radio-button>
-          <md-radio-button ng-value="false">Closed</md-radio-button>
-        </md-radio-group>
+        <md-checkbox ng-model="demo.isOpen">
+          Open
+        </md-checkbox>
       </div>
 
       <div layout="column" layout-align="start center">

src/components/fabSpeedDial/fabController.js

@@ -7,7 +7,7 @@
   function FabController($scope, $element, $animate, $mdUtil, $mdConstant, $timeout) {
     var vm = this;
 
-    // NOTE: We use async evals below to avoid conflicts with any existing digest loops
+    // NOTE: We use async eval(s) below to avoid conflicts with any existing digest loops
 
     vm.open = function() {
       $scope.$evalAsync("vm.isOpen = true");
@@ -142,8 +142,12 @@
 
     function enableKeyboard() {
       $element.on('keydown', keyPressed);
-      angular.element(document).on('click', checkForOutsideClick);
-      angular.element(document).on('touchend', checkForOutsideClick);
+
+      // On the next tick, setup a check for outside clicks; we do this on the next tick to avoid
+      // clicks/touches that result in the isOpen attribute changing (e.g. a bound radio button)
+      $mdUtil.nextTick(function() {
+        angular.element(document).on('click touchend', checkForOutsideClick);
+      });
 
       // TODO: On desktop, we should be able to reset the indexes so you cannot tab through, but
       // this breaks accessibility, especially on mobile, since you have no arrow keys to press
@@ -152,8 +156,7 @@
 
     function disableKeyboard() {
       $element.off('keydown', keyPressed);
-      angular.element(document).off('click', checkForOutsideClick);
-      angular.element(document).off('touchend', checkForOutsideClick);
+      angular.element(document).off('click touchend', checkForOutsideClick);
     }
 
     function checkForOutsideClick(event) {

src/components/fabSpeedDial/fabSpeedDial.js

@@ -148,21 +148,27 @@
           var newPosition, axis;
           var styles = item.style;
 
+          // Make sure to account for differences in the dimensions of the trigger verses the items
+          // so that we can properly center everything; this helps hide the item's shadows behind
+          // the trigger.
+          var triggerItemHeightOffset = (triggerElement.clientHeight - item.clientHeight) / 2;
+          var triggerItemWidthOffset = (triggerElement.clientWidth - item.clientWidth) / 2;
+
           switch (ctrl.direction) {
             case 'up':
-              newPosition = item.scrollHeight * (index + 1);
+              newPosition = (item.scrollHeight * (index + 1) + triggerItemHeightOffset);
               axis = 'Y';
               break;
             case 'down':
-              newPosition = -item.scrollHeight * (index + 1);
+              newPosition = -(item.scrollHeight * (index + 1) + triggerItemHeightOffset);
               axis = 'Y';
               break;
             case 'left':
-              newPosition = item.scrollWidth * (index + 1);
+              newPosition = (item.scrollWidth * (index + 1) + triggerItemWidthOffset);
               axis = 'X';
               break;
             case 'right':
-              newPosition = -item.scrollWidth * (index + 1);
+              newPosition = -(item.scrollWidth * (index + 1) + triggerItemWidthOffset);
               axis = 'X';
               break;
           }